We are all mongrel breed, except for a few primitive tribes, some with access rights to the UK, from the Himilayan plateau region, who favour keep it in the family (marrying cousins) with the 25ish fold probability increase of genetic diseases.

Still, it keeps it pure I suppose, and you can always leave the weak ones to die, and stone to death adulterous wives, or soak them in battery acid. things like that. It all seems jolly civilised!.

As for the Yanks. No it's OK to take the mickey, as with anyone else.